90% of investing is mental.

Our decisions are driven by cognitive & behavioral biases, heuristics, and mental models. Understanding these 8 concepts will make you a better investor (and decision-maker): First - what are mental models?

Mental models are simplified representations of reality that we use to understand and make predictions about the world. They can be thought of as frameworks or ways of thinking that help us organize information and make sense of our experiences.

It's US Open time! I revisited @the_innergame book "The Inner Game of Tennis."

Here are eight powerful lessons from the book used by Coach @PeteCarroll, @TomBrady, and other top performers to achieve focus, relaxed concentration, and peak performance.

amazon.com/Inner-Game-Ten… 1) Images are better than words:

Watching my daughter learn to walk was the most fascinating things I’ve seen. From helpless baby, barely able to move, to running around like a banshee in a few short years, she learned the complicated mechanics of upright walking on her own.

1. Bottle service is the ultimate nightclub flex. No one understands this better than club operators. They place VIP areas and bottle service spots within view of each other. Why?

To create a (mimetic) rivalry between customers vying to be king of the club. A thread on mimesis: 2. Social media is like a virtual nightclub that never closes — a 24-hour, seven days a week, AMEX-fueled slugfest to achieve status, confirmation, and prestige.

2 years ago today I was in a panic. My first child was due to be born in a week and for the first time in the pregnancy, I felt totally unprepared.

What will I teach my daughter? Am I ready? To cope, I wrote a letter to her with some important life lessons. Here they are: Be happy: Your happiness is the culmination of many decisions you’ll make. People will point out why you should be outraged or upset and urge you to join in their misery. Don’t capitulate. Instead, be a counterforce to negativity. Laugh and make others laugh.

1/ Recently I listened to @naval and @ToKTeacher discuss the book “The Beginning of Infinity.” As an optimist who fails to see the allure of chronic pessimism, I was drawn to several of the points discussed. Here’s my attempt at a 🧵: 2/ If you want to be often wrong and always miserable, you should be pessimistic. Pessimism served us well during more dangerous eras of human existence when the outcomes of poor decisions were often deadly. But in the modern world, pessimism isn’t likely to save your life.